By Maria Balouktsi (Karlsruhe Institute of Technology, DE)
It is broadly accepted that cities have a crucial role to play in delivering GHG reductions and many initiatives already exist. However, more needs to be done in policy and practice to coordinate, facilitate and accelerate the role of cities in delivering substantial mitigation.
Although recent pledges by individual national governments represent a major advancement for global mitigation efforts, they fall far short of meeting the Paris Agreement goal of limiting the global average temperature rise to well below 2 °C, compared to preindustrial levels, let alone the 1.5 °C target (Carbon Brief, 2021). It is now widely recognised that cities can potentially make a significant difference in global decarbonisation. Activities taking place in cities account for more than 70% of global emissions (IEA, 2008).The ‘city’ is not only an important object of assessment and level to act, but also a dense network of actors and agents of change (Balouktsi, 2020). Collaborations with city administrations, local businesses, and civil society may facilitate the work of governments in delivering ambitious emission reductions.
Furthermore, cities create space for systemic change. To prevent a 1.5 °C rise, actions are needed across every sector and area of activity. Cities can serve as living laboratories of climate actions and city governments can demonstrate climate leadership by experimenting with a range of innovative policies. In this regard, city governments can bring “on board” and collaborate with other stakeholders operating in cities including businesses, finance sectors, universities and civil society groups, especially those who represent vulnerable groups (Klinsky and Mavrogianni, 2020). Through this bottom-up process, important lessons can be drawn from experiences and challenges on the ground.
Equally important, cities can also use their collective power to level up national ambitions. There are already examples of cities demonstrating this power. For example, in reaction to President Trump’s 2017 decision to withdraw from the Paris Agreement, hundreds of US cities publicly committed to continue with delivering emission reductions through coalitions such as Climate Mayors, We Are Still In and America’s Pledge. In South Korea more than 200 local governments in 2020 collectively declared a climate emergency (Greenpeace, 2020), which urged the central government to pledge carbon neutrality by 2050 some months later.
In conclusion, city administrations and their ability to trigger action by citizens and other local actors can contribute to climate protection in the spirit of UN Sustainable Development Goal (SDG) 12 – Responsible Consumption and Production. Cities should be recognized even more as a specific level of climate action and leadership. Focused efforts are needed to understand more broadly and track cities’ progress towards their own commitments and how this contributes to national ambition.
Balouktsi, M. (2020). Carbon metrics for cities: production and consumption implications for policies. Buildings and Cities, 1(1), 233–259. http://doi.org/10.5334/bc.33
Carbon Brief. (2021). UN: New national climate pledges will only cut emissions ‘by 2%’ over next decade. https://www.carbonbrief.org/un-new-national-climate-pledges-will-only-cut-emissions-by-2-over-next-decade
Climate Chance. (2021). Global synthesis report on local climate action: assessing climate action led by local and subnational governments. https://www.climate-chance.org/wp-content/uploads/2021/04/local-action-report-2021-eng_vdef-1.pdf
Greenpeace. (2020). 226 South Korean local governments declare climate emergency. https://www.greenpeace.org/international/press-release/43507/226-south-korean-local-governments-declare-climate-emergency/
ICLEI. (2021). ICLEI’s Climate neutrality framework: accelerating integrated climate action for sustainable urban development. https://e-lib.iclei.org/publications/ICLEIs_Climate_Neutrality_Framework.pdf
IEA. (2008). Energy use in cities. In: World Energy Outlook. Paris: International Energy Agency & Organisation for Economic Co-operation and Development.
Klinsky, S. and Mavrogianni, A. (2020). Climate justice and the built environment. Buildings and Cities, 1(1), 412–428. http://doi.org/10.5334/bc.65
UNFCCC. (2021). Race to zero campaign. https://unfccc.int/climate-action/race-to-zero-campaign
C40. (2018). Consumption-based GHG emissions of C40 cities. https://www.c40.org/researches/consumption-based-emissions
Spatiotemporal evaluation of embodied carbon in urban residential development
I Talvitie, A Amiri & S Junnila
Energy sufficiency in buildings and cities: current research, future directions [editorial]
M Sahakian, T Fawcett & S Darby
Sufficiency, consumption patterns and limits: a survey of French households
J Bouillet & C Grandclément
Health inequalities and indoor environments: research challenges and priorities [editorial]
M Ucci & A Mavrogianni
Operationalising energy sufficiency for low-carbon built environments in urbanising India
A B Lall & G Sethi
Promoting practices of sufficiency: reprogramming resource-intensive material arrangements
T H Christensen, L K Aagaard, A K Juvik, C Samson & K Gram-Hanssen
Culture change in the UK construction industry: an anthropological perspective
I Tellam
Are people willing to share living space? Household preferences in Finland
E Ruokamo, E Kylkilahti, M Lettenmeier & A Toppinen
Towards urban LCA: examining densification alternatives for a residential neighbourhood
M Moisio, E Salmio, T Kaasalainen, S Huuhka, A Räsänen, J Lahdensivu, M Leppänen & P Kuula
A population-level framework to estimate unequal exposure to indoor heat and air pollution
R Cole, C H Simpson, L Ferguson, P Symonds, J Taylor, C Heaviside, P Murage, H L Macintyre, S Hajat, A Mavrogianni & M Davies
Finnish glazed balconies: residents’ experience, wellbeing and use
L Jegard, R Castaño-Rosa, S Kilpeläinen & S Pelsmakers
Modelling Nigerian residential dwellings: bottom-up approach and scenario analysis
C C Nwagwu, S Akin & E G Hertwich
Mapping municipal land policies: applications of flexible zoning for densification
V Götze, J-D Gerber & M Jehling
Energy sufficiency and recognition justice: a study of household consumption
A Guilbert
Linking housing, socio-demographic, environmental and mental health data at scale
P Symonds, C H Simpson, G Petrou, L Ferguson, A Mavrogianni & M Davies
Measuring health inequities due to housing characteristics
K Govertsen & M Kane
Provide or prevent? Exploring sufficiency imaginaries within Danish systems of provision
L K Aagaard & T H Christensen
Imagining sufficiency through collective changes as satisfiers
O Moynat & M Sahakian
US urban land-use reform: a strategy for energy sufficiency
Z M Subin, J Lombardi, R Muralidharan, J Korn, J Malik, T Pullen, M Wei & T Hong
Mapping supply chains for energy retrofit
F Wade & Y Han
Operationalising building-related energy sufficiency measures in SMEs
I Fouiteh, J D Cabrera Santelices, A Susini & M K Patel
Promoting neighbourhood sharing: infrastructures of convenience and community
A Huber, H Heinrichs & M Jaeger-Erben
New insights into thermal comfort sufficiency in dwellings
G van Moeseke, D de Grave, A Anciaux, J Sobczak & G Wallenborn
‘Rightsize’: a housing design game for spatial and energy sufficiency
P Graham, P Nourian, E Warwick & M Gath-Morad
Implementing housing policies for a sufficient lifestyle
M Bagheri, L Roth, L Siebke, C Rohde & H-J Linke
The jobs of climate adaptation
T Denham, L Rickards & O Ajulo
Structural barriers to sufficiency: the contribution of research on elites
M Koch, K Emilsson, J Lee & H Johansson
Life-cycle GHG emissions of standard houses in Thailand
B Viriyaroj, M Kuittinen & S H Gheewala
IAQ and environmental health literacy: lived experiences of vulnerable people
C Smith, A Drinkwater, M Modlich, D van der Horst & R Doherty
Living smaller: acceptance, effects and structural factors in the EU
M Lehner, J L Richter, H Kreinin, P Mamut, E Vadovics, J Henman, O Mont & D Fuchs
Disrupting the imaginaries of urban action to deliver just adaptation [editorial]
V Castán-Broto, M Olazabal & G Ziervogel
Building energy use in COVID-19 lockdowns: did much change?
F Hollick, D Humphrey, T Oreszczyn, C Elwell & G Huebner
Evaluating past and future building operational emissions: improved method
S Huuhka, M Moisio & M Arnould
Normative future visioning: a critical pedagogy for transformative adaptation
T Comelli, M Pelling, M Hope, J Ensor, M E Filippi, E Y Menteşe & J McCloskey
Nature for resilience reconfigured: global- to-local translation of frames in Africa
K Rochell, H Bulkeley & H Runhaar
How hegemonic discourses of sustainability influence urban climate action
V Castán Broto, L Westman & P Huang
Fabric first: is it still the right approach?
N Eyre, T Fawcett, M Topouzi, G Killip, T Oreszczyn, K Jenkinson & J Rosenow
Social value of the built environment [editorial]
F Samuel & K Watson
Understanding demolition [editorial]
S Huuhka
Data politics in the built environment [editorial]
A Karvonen & T Hargreaves
Latest Commentaries
Systems Thinking is Needed to Achieve Sustainable Cities
As city populations grow, a critical current and future challenge for urban researchers is to provide compelling evidence of the medium and long-term co-benefits of quality, low-carbon affordable housing and compact urban design. Philippa Howden-Chapman (University of Otago) and Ralph Chapman (Victoria University of Wellington) explain why systems-based, transition-oriented research on housing and associated systemic benefits is needed now more than ever.
Unmaking Cities Can Catalyse Sustainable Transformations
Andrew Karvonen (Lund University) explains why innovation has limitations for achieving systemic change. What is also needed is a process of unmaking (i.e. phasing out existing harmful technologies, processes and practices) whilst ensuring inequalities, vulnerabilities and economic hazards are avoided. Researchers have an important role to identify what needs dismantling, identify advantageous and negative impacts and work with stakeholders and local governments.